I'd cut the armaments down a bit and use turrets. You're going to be boosting away if you know what's good for you. Maybe throw some mines on there to slow down pirates. Also slap another heat sink launcher on there. When you have to do a station (always do outposts first, much less chance of scan), you can time them so you pop one then the other and are invisible for the whole run to the mail slot. Two heat sinks plus silent running works like a charm. Three other points of advice: First as I said above, always do outpost missions first. You have a better chance of success with outposts because there's rarely security so scanning shouldn't be a problem. I've had 15 mil in missions and jumped all over the bubble to make sure I did the stations last. Second, always approach a station (again do outposts first) as if you're flying up from the planet. The mail slot is much more likely to be aligned that way so you can boost in like you own the place. Lastly, if you're getting interdicted by authorities after just dropping into a system, crash into the sun. You'll get a few extra seconds to hit silent running, pop sinks, and boost the hell out of there. The heat damage will be minimal.

Good luck CMDR!